650400194465 has 32 divisors (see below), whose sum is σ = 905374821120. Its totient is φ = 439305928704.

The previous prime is 650400194461. The next prime is 650400194467. The reversal of 650400194465 is 564491004056.

It is a cyclic number.

It is not a de Polignac number, because 650400194465 - 2² = 650400194461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650400194461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1799282 + ... + 2130308.

It is an arithmetic number, because the mean of its divisors is an integer number (28292963160).

Almost surely, 2^650400194465 is an apocalyptic number.

It is an amenable number.

650400194465 is a deficient number, since it is larger than the sum of its proper divisors (254974626655).

650400194465 is a wasteful number, since it uses less digits than its factorization.

650400194465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331881.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 650400194465 in words is "six hundred fifty billion, four hundred million, one hundred ninety-four thousand, four hundred sixty-five".